Cold laser therapy is a type of treatment in which low-intensity light is applied to your body, typically over injured or inflamed tissue. The low-intensity light, referred to as "cold laser," is thought to improve blood flow and decrease pain and inflammation to injured tissues .
The light-emitting diodes in cold laser therapy are not powerful enough to cut tissue, but they are strong enough to penetrate your skin and promote healing after injury.
Cold laser therapy uses light photons that are introduced to your skin with a wand that contains several light-emitting diodes. As the photons enter your skin and pass through injured tissue, chemical changes to the mitochondria of the cells occur, signaling them to increase the production of adenosine triphosphate. This is theorized to cause positive healing to those tissues.